Air or water blast magnet.



J. D. HIIJJARD,l IP.. L o. E. PARSONS.

AIR OR WATER BLAST MAGNET.

APPLICATION FILED JAN.29,.1906.

Patented June 1, 1909.

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il il lll M@ STATES Prillllll JOHN D. llLLARD, JR., AND CHARLES E. PAltSONS, OF GLENS FALLS, NEW YORK.

Application tiled January 29, 1906.

Specification o Lettere Patent.

Eat-enter?. June l, i909.

serial No. 298,534.

,Jb uit 'whom 'it may concern.:

lle it known that we, JOHN D. HILLrA'iiD, Jr., and Citations E. Pai-isoxs, citizens of the United States, residing at Glens Falls, in the county oit Warren. and State of New York, hare invented a certain new and useful linprevement in flrir or V'fater Blast Magnets, or' which the following is a specification, reference being had therein to the accompanying,T drawing. v

Our inrention relates to electro magnets, and has for its object the provision of a magnet for lifting purposes, in which self-cen tained means will serve to clean off the surtace of the magnetic material te be removed.

it is new quite common to use electroniagnets of different sizes and designs, in connection with cranes and the like, but it has been .tound that frequently the use of the same unsatisfactory, because the articles to be litted are covered with dirt or mud. fis the ei'eetire pull of a magnet. is equal to the product ot the area thereof into the square of the flux, divided by a constant, and as the tlurt depends upon the magnetizing torce and reluctance, the latter being` greatly increased by a dirt or inud'gap, the extreme importance of a clean surface against which the magnet may be applied, is apparent.

ln order to insure clean surfaces it has heretofore been necessary to rub or scrape the latter by hand, which, ofeourse, is very undesirable. in order to avoid this we have developed a magnet from whose contact face a blast oit air or water may be expelled,

which will thoroughly cleanse the surface of the object just as the magnet comes against it. It is apparent that this device is very useful, not only in many situations on shore, but also in marine operations. In addition, 'the ii'n'ent-ion is of use in the extraction of ere and metals generally from non-metallic mixtures, the air or water blast serving to carry oit waste and detritus, while the magnetic nuitcrials are retained. The extraction et magnetic material may take place under water or under sand. ln the latter case a' blast ot' water is used through the magnet. which bui-rows its way downward in the sand until the magnetic material is. reached,

'with the blast of water still being expolled the same may be easily raised out ot' the sand body.

Our invention,'briefly stated, comprises perioralions and a suitable hose connection thereto. whereby water or air under pressure nia)v lic supplied so as te .be expelled from the perfor-ations in tlie`faces el the magnetic poles.

Figure l is a vertical sectional view. Fig. Q is a transverse section on the line X-X of Fig. 1. 3 is a similar section on the line Y-Y, of Fie'. l. Fig. i is a top plan View, and Fig. 5 is a bottom plan view.

Referring now to the drawings, l repre sents la core et' sottiron, which is provided with a hanged head 2, and longitudinal apertures Around this core-is wound a suitable. winding 4, which rests upon a .shoulder 5, termed by the flanged head 2,

and which extends up to the upper end of the core l. SuM-minding the coil Ll and having its sides projecting down, so as to aline with thc bottoni et the core l, is a heavy shell tl. whose head 'Y is secured to the upper end ot the core l., and is provided with apertures 8, adapted to register with these ot the core. Suitable screws D are tapped into. the core through the head 7, and serre to hold the two parts in their proper relation. llxteiuling;` down through the sides ot' the traine C are apertures lt), used 'for the same purposes as those through 'the head and core l. A hollow cap il is placed en top ot the traine (l, in an air u d water'- tight manner, by interposingr a rubber or other suitable gasket, and is held in place upon the frame C, by screws 13, which pass through the hollow cap and are tapped into the head 7 ot' the traine 6. rlhis cap terms a. reservoir or i'ecdingv chamber 17 so .that uniform distribution through the openings in the core and trame may be obtained. An apertured lugl 14 projects above the top et' the cap ll, and is provided with screwthreads on its-exterior surface, so as to receive the end coupling` ot' water or air hose t8. which is adapted. to convey either `fluid to the hollow cap 1l from the pump 19, and from hence through the apertures 3, S, and l0, to the object to be lifted.

A suitable ring or eye 'l5 is secured to the center of the cap ll, in which a lifting hook maybe secured. The cap is also provided with a suitable aperture .which allows the wires l@ ofthe magnet to'lloe led out. It is preferable that the line wires of the magnet be in a two-wire cable, so that only one aperture is needed. We have not shown herein any means for rendering this aperture air-tight, but any well known device for that purpose may be used.

@ther modifications might be resorted to without departing from the spirit and scope of our invention, and we consider all such changes or modifications well within. the

`meaning and purview of lthe appended claims.

Having thus described our invention, what we claim and desire to secure by Letters Patent is,-

l. A grappling or lifting magnet comprising the following instruinentalities: a core constituting one element of a magnetic circuit, a winding encircling said core and leaving the end thereof exposed, an iron shell constituting an extension or return limb of the magnetic circuit attached to said core and surrounding said winding, a plurality of channelsor openings formed in the core and insaid return limb, a cap or cover securedy upon the structure and forming a closed chamber communicating with saidv an inlet device atconnecting a pressure ing means for the struccliannels or A openin tached to said cap tube thereto, and lm ture.

2. A lifting magnet having an apertured core, an apertured shell surrounding `the core, land means for feeding a cleaning fluid through both against the article to be acted upon by the magnet. l I

3. grappling or lifting magnet having a casing formn a fluid distributing chamher, la'core. havi apertures in communication with said 'iamben means for supplying fluid under pressure to the chamber, and means secured to the casing for lifting the entire structure.

4f. A lifting magnet having an inclosing frame, apertures eii'teiiding therethrough', and means for feeding a cleansing Huid thro ugh apertures.

5. An elec cinagnet having an apertured core, apertured means surrounding the said core, the apertures of said means communieating with the core apertures, and means feeding a cleaning fluid through said apertures.

.,ihm electromagnet having a core with apertures extending therethrough, a head on said. core, said head provided with apertures.

registering with those in the core, a shell surrounding said core and connected to the ceases head, apertures through said shell, and means for feeding a cleaning-fluid through said apertures.

7. An electromagiiet having an apertured core, a headed frame surrounding said core and provided with apertures registering with the apertures of said core, supplemental apertures in said headed frame, a hollow head secured to said frame and constituting a fluid chamber, a lifting device secured to said hollow head, and a suitable source of fluid supply connected thereto.

8. An electromagnet comprising a core and av winding therefor, a flange upon said core upon which the winding rests, a headed frame surrounding said winding, a hollow head secured to said headed frame, lifting means connected to said hollowvhead, a Huid supply connected thereto, and apertures through said headed frame and said core communicating with the hollow head and adapted to convey fluid pressure to the article to be lifted.

9. An electromagnet, apertured means surrounding said magnet, and a source of fluid supply connected to said apertured means.

l0. An electromagnet comprising a core, a flanged end therefor, a winding surrounding said core and resting on said core and 'headed shell surrounding said core and winding, said shell and core being provided said apertures.

ll. A portable. lifting magnet having a heavy magnetic circuit normally completely faces adapted to be applied to an object to be lifted, a plurality of channels or opensaid magnetic circuit and terminating at the exposed or Contact faces thereof, a source of fluid pressure, a tubular connection therefrom to the channels in the magnet, and supporting means for the magnetic circuit.

l2. Electromagnetic lifting apparatus comprising a magnet structure, means for supplying current thereto, means r'or lowering the same into juxtaposition with the sui'- face of the object to be lifted, and means for directing a blast of fluid under pressure into the space between thJ magnet poles and the object, so as to clean the surface of the latter, said iuid pressure being cut olf when contact is made. Y f

13. Electromagnetic lifting ap aratus comprising a lifting magnet, means Ior supplying current thereto, means for bringing the same into juxtaposition with a magnetic body, and means for directing fluid under pressure against the contact surface of the \latter in aedirection perpendicular thereto,

with apertures, and a hollow cap covering' broken in a portion thereof, withexposed.

ings formed in the respective membersof so as to scatter 'and iorce outward foreign y ing a blast of' fluid under pressure s0 as l' blow out foreign nmter from between surface o l0 umgnet pole and the Contact 

